diff --git a/src/main/java/ch/zhaw/gartenverwaltung/io/JsonTaskList.java b/src/main/java/ch/zhaw/gartenverwaltung/io/JsonTaskList.java
index 7f6d36b..caecb1a 100644
--- a/src/main/java/ch/zhaw/gartenverwaltung/io/JsonTaskList.java
+++ b/src/main/java/ch/zhaw/gartenverwaltung/io/JsonTaskList.java
@@ -88,7 +88,8 @@ public class JsonTaskList implements TaskList {
         if(taskMap.isEmpty()) {
             loadTaskListFromFile();
         }
-        taskMap.values().removeIf(task -> task.getCropId() == cropId);
+        taskMap.entrySet().removeIf(entry -> entry.getValue().getCropId() == cropId);
+        writeTaskListToFile();
         notifySubscribers();
     }
 
diff --git a/src/test/java/ch/zhaw/gartenverwaltung/io/JsonTaskListTest.java b/src/test/java/ch/zhaw/gartenverwaltung/io/JsonTaskListTest.java
index bc11d99..359ea9a 100644
--- a/src/test/java/ch/zhaw/gartenverwaltung/io/JsonTaskListTest.java
+++ b/src/test/java/ch/zhaw/gartenverwaltung/io/JsonTaskListTest.java
@@ -47,17 +47,16 @@ public class JsonTaskListTest {
 
     }
 
-    @Disabled("disabled until adding works.")
     @Test
     @DisplayName("Add task.")
     void addTask() {
-        Task task = new Task("Testtask", "This is a test Task.", LocalDate.parse("01.05.2022", formatter), 1);
+        Task task = new Task("Testtask", "This is a test Task.", LocalDate.parse("2022-05-01", formatter), 1);
         try {
             testDatabase.saveTask(task);
             List<Task> taskList;
             try {
-                taskList = testDatabase.getTaskList(LocalDate.parse("30.04.2022", formatter),
-                        LocalDate.parse("31.05.2022", formatter));
+                taskList = testDatabase.getTaskList(LocalDate.parse("2022-04-30", formatter),
+                        LocalDate.parse("2022-05-31", formatter));
             } catch (IOException e) {
                 throw new RuntimeException(e);
             }
@@ -72,8 +71,7 @@ public class JsonTaskListTest {
     @Test
     @DisplayName("Remove task.")
     void removeTask() {
-        Task task = new Task("Dummy", "Dummy", LocalDate.parse("2022-05-31", formatter), 1)
-                .withId(2);
+        Task task = new Task("Dummy", "Dummy", LocalDate.parse("2022-05-31", formatter), 1).withId(2);
         try {
             testDatabase.removeTask(task);
             List<Task> taskList;
@@ -102,7 +100,7 @@ public class JsonTaskListTest {
 
     }
 
-    @Disabled("Disabled until removing works")
+
     @Test
     void removeTasksForCrop() {
         List<Task> taskList;